Machine for the production of packaging inlays



oct. 1o, 195o A. Bossu 2,525,202

MACHINE FOR THE PRODUCTION 0F PACKAGING INLAYS 4 Filed March 15, 1948Fig-'7 im a b i@ Patented Oct. 10, r1950 MACHINE Foa THE PRoDUo'rroN oFy PACKAGING INLAYS Alf-red ossLBottmingen, near Basel, SwitzerlandApplication Maren 15, 194s., serial No naar, In' Switzerland January 8,1948 7 Claims.

The present invention relatesv to ay machine for `the production ofpackagingv inlays having a suca base strip which is to be stuckrto theformed band, to the terminal part of the working zone of the`cross-rods, the whole being so arranged that recesses corresponding tothe cross-rods are formed in the bandV led through` the machine, by theco-operation of the band-pressing roller with the cross-rods; theent-ries'to the recesses being narrowed by holding back andso closingtogether the cross-rods which are led through the working zone with playin the direction of movement, and the band withV the recesses so formedVfinally being stuck to the base strip which is led to it from below.

An example of an embodiment of the, invention is illustrated in theaccompanying drawing, but only to the extent necessary for understandingthe invention. i

Figure 1 shows partly in elevation and partly in section that part ofthe machine which is directly involved by the invention;

Fig. 2 is a cross-section on the line lEI-II of Figure 1;

Figure 3 is a detail plan view on the line III-III of Figure 1, and

Figure 4 is a longitudinal section of a packaging inlay produced on themachine of Figure 1.

The machine illustrated in Figures 1, 2 and 3 has a caterpillar-likecirculating member with cross-rods a, the successive rods beingconnected together at their reduced ends by chain members bformingslotted guides. The crossrods a so connected run over two pairsof chain wheels c1 and c2, of which one pair is on a shaft d1 and theother on a shaft d2. Of the two shafts, d1 is driven. Below the pair ofchain wheels c1, on a loose shaft e1, is a band-pressing roller e whichengages with its teeth between the successive cross-Lrodsa of thecirculating member. Directly below this member, between the wheel pairsc1, c2 is provided a guide table f which presents a transverse openinginto which a guide roller g enters. Over this rollerg runs a strip lh 2which isconveyed to it by two feed rollers il, i2 of which the roller i1at the same time serves to coatV the strip with an adhesive, the stripythen runningthroug-h the opening in the table and then being drawn awayover the terminal part of the table as may be seen in Figure 1. m is ablade spring constituting a braking member, which is secured by one endto some stationary part and with its other end engages with thecross-rods passing by it below', in such a way that the rods are heldback over the whole length of the guide table f. In this wayv therecesses formed by the cross-rods a which traverse the working zonebetween the wheel pairs c1 and c2, and the band pressing roller e, in aband o of material carried through the machine, are squeezed togetherand their entries are automatically narrowed.v -The band o with therecesses formed in it comes over the guide roller y into contact withthe base strip h and is stuck thereto, the recesses in the band o sobeing secured in their squeezed together formation. Pieces of desiredlength of the combined band and strip stuck together in this way are cutoff, which can be used as packaging inlays having recesses With narrowedentries, suitable for the reception of elongated objects as for exampleglass ampules or the like.

The holding back of the cross-rods a necessary for the formation ofrecesses with narrowed entries, can also be brought about by arrangingthe caterpillar-like circulating member not horizontally as in Figure l,but vertically, in which case the holding back is ensured by the weightof the cross-rods a and a braking member becomes unnecessary.

It is to be noted that the inlay is made continuously from two sheets ofsuitable material. The sheet o being initially formed with substantially equal or uniform corrugations by the interaction ofthemembers e, c and the rods or mandrels a. The mandrels a determine theconfiguration and size of the recesses of the inlay. The corrugationswhich lie intermediate of two adjoining mandrels, while the sheet isstill under the `influence of the members e and c', are converted, asthey leave the influence of said members, into ribs or beads as shownboth in Figs. l and 4 by the interaction of the braking member m and thearrangement whereby each mandrel a may advance to squeeze the walls ofsuch corrugations together (see Fig. 4") and thereby form the ribs orbeads. The ribsor beads are not formed by the use of an internalmandrel, but the material thereof is permitted to freely flow or molditself to such configuration, as it tends to assume, by reason of thesqueezing or extruding action of the mandrels a and the braking memberm. Contact of the under side of the mandrel supported recesses, with theadhesive on the sheet h, is made after the beads have been formed, butwhile they are still retained under the influence or Ysupported by themandrels a in order that the contours of the recesses remain fixed. Themandrels leave the recesses, after the adhesive is setsuiciently to fixthe contour of the recesses, as is illustrated in Fig` 1 by thedivergence of the inlay from the path of travel from that of themandrels, the inlay readily exing to permit the mandrels, successively,to pass out of the recesses.

What I claim is:

1. In a machine for the production of packagtheir traverse of theworking zone so closing them l.

together and producing narrowed entries to the recesses, and means forleading -a base strip to the terminal end of said working zone and theresticking said band to said strip after the recesses with their closedentries have been formed in the band. v

2. A machine as set forth in claim 1 wherein said working zone ishorizontal and the means for holding said rods back is a braking memberengaging them. y

3. A machine as set forth `inclaim 1 wherein said working zone isvertical, the weight of said rods constituting the means for holdingthemback.

4. A machine as set forth in claim 1 wherein said working zone ishorizontal, the machine also including aY guide table over which saidrods and the band run during their traverse of the working zone, saidtable being slotted near its terminal end, and a guide roller enteringthe slot from below, the base strip being led over said roller, throughthe slot and over the terminal part of said table.

5. In a machine for the production of packag- -ing inlayslthecombination of a plurality of cross rods, slotted chain membersconnecting the ends of successive rods to constitute a closed loopmember in which the rods have longitudinal play, freely rotatable meansover which one of said loop member runs, a, pair of driven chain wheelsaxially spaced over which the other end of said loop runs, a tableguiding the slack run of said loop member, a toothed roller engagingbetween said rods in the region where they leave said chain wheels sothat a band led between said rods and roller and over said table willhave recesses formed in it by the co-operation of said rods and roller,means holding back the rods during their passage over the table, saidtable so closing them together and narrowing theentries of the recessesin the band, and means for leading an adhesive-coated base strip betweenthe terminal part of said table and the band so that the band is stuckto the strip.

v6. A machine as set forth in claim 5 wherein said table has a Yslotnear its terminal end, the machine also including a guide roller for thestrip located behind said table and entering the slot therein.

7. A machine as set forth yin claim 6 also including alpair of feedrollers between which the strip passes and is thereby fed to said guideroller, y

one of said feed rollers also constituting an adhesive-coating roller.

ALFRED BOSSI.

REFERENCES CITED The following references are of rrecord in the le ofthis patent:

UNITED STATES PATENTS

